SGER: Primary and Secondary Production Measurements Along the Western Antarctic Coastline on the Oden Ship of Opportunity Cruise

众所周知，南极洲西部海岸线的研究不足，但被认为在南大洋对全球碳循环发挥了相对较大的作用。奥登过境巡航是一个理想的机会，收集数据的一个长期采样不足的地区的南大洋，从西南极半岛到罗斯岛。 所收集的信息将补充在进行两个主要海洋方案-南大洋全球生态系统动力学方案和南大洋联合全球海洋通量研究方案-期间在毗邻区域获得的数据。 我们建议进行初级和次级生产量的测量，以建立未来巡航的基线，并为同时进行的海洋哺乳动物，海鸟和冰观察提供支持。我们将对正在航行的海水流进行数字化采样，以检测温度、盐度、总叶绿素、pH值、溶解氧、CDOM荧光、硝酸盐、磷酸盐、铁以及浮游植物。此外，还将采集离散样本，通过HPLC测定总碳、微型浮游生物和色素结构。将在航行期间积累Modis遥感数据，以便与现场色素数据进行交叉校准，并与航行中的气象数据进行交叉参照。总体目标是了解海冰边缘动态如何影响初级和次级生产，特别是磷虾幼体动态。一个博士学生和一名本科生将参与该项目。 此外，该项目将本着国际极地年的精神，促进与瑞典和智利科学家的国际合作，这些科学家也将在巡航中收集海洋学数据。

The western Antarctic coastline is notoriously understudied but is thought to play a relatively large role in the Southern Ocean for global carbon cycling. The Oden transit cruise is an ideal opportunity to collect data in a chronically undersampled region of the Southern Ocean, from the West Antarctic Peninsula to Ross Island. The information collected will augment data obtained in adjoining regions during the conduct of two major ocean programs, Southern Ocean GLOBEC (Global Ocean Ecosystem Dynamics) and Southern Ocean JGOFS (Joint Global Ocean Flux Study). We propose to conduct underway measurements of primary and secondary production to establish a baseline for future cruises and as support for the marine mammal, sea bird and ice observations being conducted concurrently. We will digitally sample the underway seawater stream for temperature, salinity, total chlorophyll, pH, dissolved oxygen, CDOM fluorescence, nitrate, phosphate, iron, and zoo and phytoplankton. In addition, discrete samples will be taken for total carbon, microplankton, and pigment structure by HPLC. Modis remote sensing data will be accumulated during the time period of the cruise to allow cross calibration with in situ pigment data and cross referenced with underway meteorological data. The overall goal is to understand how the sea ice edge dynamics influence both primary and secondary production, particularly with respect to larval krill dynamics. One Ph.D. student and one undergraduate student will be involved in the project. In addition, the project will foster international collaboration, in the spirit of International Polar Year, with Swedish and Chilean scientists that also will be collect oceanographic data on the cruise.